Shenzhen Wanyi Technology Co., Ltd.  

Product Name: Stationary Hydrogen online Monitor-Hydrogen Alarm-Air Hydrogen Meter, Gas Analyzer[Onetest] Model NO.: EST-301-H2 Type: Electrochemical Gas Analyzer Gas: H2 Certification: CE Portable: online Customized: Customized Brand: Cestsen Trademark: CESTSEN Transport Package: Box Specification: 226 * 177 * 92mm Origin: China Product Description Stationary Hydrogen online Monitor-Hydrogen Alarm-Air Hydrogen Meter,Gas Analyzer[ONETEST]EST-301-H2 hydrogen detector is a fixed gas concentration measuring instrument. It adopts high-precision circuit design. The core adopts imported sensor chip. After Wanji Technology develops calibration, signal amplification, calibration calibration and strict testing, it is delivered to the factory. .The instrument is designed and produced in accordance with relevant national standards:GB/T18883-2002 GB3095-1996GB50325-2010GB50325-2001GB12358-2006 Mainly used:Petrochemical, electronics, metallurgical industry, food processing, aerospace Hydrogen is the main industrial raw material, and the most important industrial and specialty gases, and has a wide range of applications in industry. Hydrogen is used as raw material for synthetic ammonia, synthetic methanol, synthetic hydrochloric acid, reducing agent for metallurgy, hydrodesulfurization agent for petroleum refining, etc.Hydrogen production, high-energy new fuels, etc.University laboratory research and developmentFeatures:Explosion-proof safety cavity design meets IEC60079 electrical flameproof requirements; aluminum explosion-proof casing has good sealing, anti-corrosion, long life, low temperature resistance, sulfide resistance, silane gas poisoning; suitable for offshore platforms, high temperature and high Use in a variety of harsh environments such as wet.Advanced imported sensors for high precision, long life, repeatability and stability.Automatically identify the sensor probe, you can use the sensor probe of different gas types; after replacing the sensor probe, the program automatically recognizes the gas type, range, low alarm value, high alarm value and other parameters.With backlit LCD, the concentration value is displayed on site, and the on-site and remote setting maintenance does not affect the control unit; the magnetic induction non-contact mode completes the calibration and parameter setting.Four special high-brightness LED lights respectively indicate power, low and high alarms and function prompts. The low-limit and high-limit alarm action values can be programmed. At the same time, the audible alarm sounds an alarm and informs the field staff at the first time.At the same time, there are two kinds of digital/analog signal outputs. The analog signal is a standard three-wire 4-20mA current signal; the digital signal is RS485, which can communicate with the host computer very conveniently.It can be provided with a menu password to prevent other personnel from operating and changing parameters at will, safe and reliable.Range selection:ModelGasRangeppmdisplay resolutionppmSensitivityppmPrecisionResponse timeT90EST-301-H2-1000H20-10001010±5%F.S.<45SEST-301-H2-5000H20-50001515±5%F.S.<45SThe sensitivity is the minimum test concentration of the instrument. The above is the measurement range of the conventional gas concentration. If other ranges are required, the sensitivity can be customized.Electrical performance:1, working voltage: 12-30VDC2, working current: 20-30mA (static)3, display mode: with backlight 4 bit LCD display4. Display unit: PPM8, test object: hydrogen9, detection principle: electrochemical10, detection method: diffusion11, response time: 60s12. Alarm value: can be set (0 means cancel the alarm)13, alarm mode: two levels of sound and light alarm (external sound alarm, optional)14, alarm error: ≤ ± 5% alarm set value15, contact capacity output: 10A 250VAC16, repeatability: ≤ 2%;17. Stability: ≤±2% F.S/6h (zero point), ≤±5% F.S/6h (gain)18, working temperature: -10 ° C ~ +40 ° C19. Relative humidity: ≤ 95% RH without coagulation20, atmospheric pressure: ± 10% atm21, signal output: three-wire system 4-20mA (analog) and RS485 (digital)22. Transmission distance: ≤100m (4-20mA), ≤1000m (RS485)23, explosion-proof grade: Ex d IIC T624, protection level: IP6525, wiring: M20 * 1.5 internal thread26, installation method: wall-mounted27, shell material: aluminum explosion-proof shell (main shell), stainless steel (accessory)28, the whole machine size: 226 * 177 * 92mm29, the whole machine weight: about 1.5 kgProduct list1. EST-301 explosion-proof fixed gas detection transmitter host.........................................12, EST-301 sensor probe.....................................................................................................13, EST-301 explosion-proof type sound and light alarm ...................................................... (optional)4, EST-301 instruction manual.............................................................................................15, EST-301 calibration report................................................................................................16, EST-301 product packaging box.......................................................................................17, EST-301 mounting screws................................................................................................4 pairs8, EST-301 induction magnetic bar.......................................................................................1